Mu myaka yashize, mubikorwa bya plastiki, uburyo buzwi cyane bwo gukora, ni ugutunganya plastike. Kuzunguruka kuzunguruka, bizwi kandi nka rotary molding, rotary molding, nuburyo bwa termoplastique hollow molding. Gushushanya kuzunguruka byatangiye mu myaka ya za 40 mu Bwongereza, gushushanya byavutse mu 188 ...
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